body {
    background: black;
}

form {
    position: absolute;
    top: 100px; left: 25%;
    width: 50%; height: 400px;
    color: white;
    background: black;
    border: 1px solid white;
    -moz-box-shadow: 0px 0px 10px white;
    -moz-border-radius: 4px;
    -webkit-box-shadow: 0px 0px 10px white;
    -webkit-border-radius: 4px;
    -o-box-shadow: 0px 0px 10px white;
    -o-border-radius: 4px;
    box-shadow: 0px 0px 10px white;
    border-radius: 4px;
}

.portée {
    position: absolute;
    top: 25px; left: 5%;
    width: 90%; height: 252px;
}

fieldset {
    position: absolute;
    top: 300px;
    width: 100%;
    margin: none; padding: 0px;
    text-align: center;
    border: none;
}

input {
    display: inline-block;
    margin: 0px;
    width: 500px; height: 50px;
    font: 40px/1 "Arial", "Helvetica", sans-serif;
    font-variant: small-caps;
}